CN215005645U - Test tool for auxiliary inverter - Google Patents
Test tool for auxiliary inverter Download PDFInfo
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- CN215005645U CN215005645U CN202023196745.XU CN202023196745U CN215005645U CN 215005645 U CN215005645 U CN 215005645U CN 202023196745 U CN202023196745 U CN 202023196745U CN 215005645 U CN215005645 U CN 215005645U
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Abstract
The utility model discloses a test fixture for auxiliary inverter, include: the device comprises a box body, a power supply unit, a load unit and a fault judgment unit; the box body comprises a PCB, a test interface and a power interface; the power supply unit is used for providing a set working power supply for the auxiliary inverter; the load unit is used for simulating the working state of the auxiliary inverter; the fault judgment unit comprises a test sampling circuit and a fault indicator lamp. The utility model discloses an introduce power supply unit and load unit in testing the frock, simulate out the operational environment of the input and output of auxiliary inverter case on rail vehicle completely to realize testing the operating condition of auxiliary inverter in lifelike operational environment, in order to fully expose the fault point of auxiliary inverter; convenient operation and stable and reliable detection result.
Description
Technical Field
The utility model relates to a test technical field of rail vehicle auxiliary inverter, concretely relates to a test fixture for auxiliary inverter.
Background
Along with the recent years, a large number of subway rail transit trains enter a large and erection repair stage, and particularly, a large part of train traction boxes and auxiliary inverter boxes enter a repair and maintenance demand outbreak period. In the face of an auxiliary inverter system box which is separated from the overall environment of a train, how to judge whether the auxiliary inverter system box can work normally or needs to be maintained when having a fault and where the fault point is, therefore, how to comprehensively and accurately test the working state of the system box becomes a research hotspot of a plurality of maintenance companies.
The auxiliary inverter box mainly comprises an auxiliary inverter and a storage battery charger. Wherein, supplementary inverter is direct to get the electricity by the pantograph, and input voltage is direct current 1500V usually, turns into following output voltage through power electronics inverter: alternating current three-phase 380V and 50Hz constant voltage. The voltage is mainly used for supplying power to electric equipment such as air compressors, air conditioning equipment, ventilation devices and the like.
The storage battery charger chops the acquired direct current voltage into square wave voltage by controlling the on and off of the IGBT, the square wave voltage (alternating current) is rectified into direct current 110V voltage on the secondary side through the isolation of a transformer, the storage battery charger charges the storage battery, and meanwhile, the storage battery charger supplies power to a load connected to the output end.
After the auxiliary inverter is detached from the whole railway vehicle, the input power supply and the output load of the auxiliary inverter are all separated from the original site. In order to test the running state of the inverter, a power supply system, a load system and a fault judgment display system are required to be built according to the electrical structure of the auxiliary inverter, so that a complete working loop can be formed. In the prior art, a detection instrument is usually adopted to detect the on-off state and the local working state of each electrical element of the auxiliary inverter one by one, which is greatly different from the practical application environment of the auxiliary inverter, so that the testing efficiency is low, and the defect that individual invisible abnormity cannot be detected due to separation from the use environment exists.
Therefore, a testing tool which is convenient to operate, rapid to detect and stable and reliable in detection result is needed in the technical field.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a convenient operation, detect swift, the testing result is reliable and stable and be applicable to the test fixture of auxiliary inverter.
In order to achieve the above purpose, the technical solution of the present invention is as follows:
a test fixture for an auxiliary inverter, comprising: the device comprises a box body, a power supply unit, a load unit and a fault judgment unit; the PCB is arranged inside the box body, and the test interface and the power interface are arranged outside the box body; the PCB is respectively communicated with the test interface and the power interface; the test interface is used for connecting the auxiliary inverter, and the power supply interface is used for externally connecting a power supply; the power supply unit is connected with the auxiliary inverter through the test interface and used for providing a set working power supply for the auxiliary inverter; the load unit is connected with the output end of the auxiliary inverter and is used for simulating the working state of the auxiliary inverter; the fault judgment unit comprises a test sampling circuit and a fault indicator lamp, wherein the test sampling circuit is arranged on the PCB, is connected with the auxiliary inverter through the test interface and is used for acquiring data to be tested of the auxiliary inverter; the fault indicator lamp is arranged outside the box body and is in communication connection with the test sampling circuit.
The beneficial effect of adopting above-mentioned technical scheme is: the problems of low testing efficiency and poor testing result error of the auxiliary inverter in the prior art are fully considered, and the power supply unit and the load unit are introduced into the testing tool to completely simulate the working environment of input and output of the auxiliary inverter box on a railway vehicle, so that the working state of the auxiliary inverter is tested in a vivid working environment to fully expose fault points of the auxiliary inverter; the test tool is used for applying a starting signal to the auxiliary inverter, the auxiliary inverter is started to operate, the auxiliary inverter can be detected, the operation is convenient, and the detection result is stable and reliable.
As the utility model discloses technical scheme's further improvement, power supply unit includes programmable controller, programmable controller sets up the inside of box to provide two kinds at least direct current voltage for supplementary dc-to-ac converter.
The beneficial effect of adopting above-mentioned technical scheme is: the power supply unit supplies power to the auxiliary inverter by introducing the programmable controller, fully utilizes the advantages of high reliability, strong anti-interference capability, small size and portability of the programmable controller, and provides various voltages for the auxiliary inverter at one time, thereby constructing a normal power supply environment.
As a further improvement of the technical solution of the present invention, the load unit includes a three-phase resistance load and a pure resistance load, and the three-phase resistance load is connected to the ac output terminal of the auxiliary inverter for simulating an ac load; and the pure resistance load is connected with the direct current output end of the auxiliary inverter and is used for simulating a direct current load.
The beneficial effect of adopting above-mentioned technical scheme is: the three-phase resistance load and the pure resistance load are introduced into the load unit, and the alternating current load and the direct current load are respectively simulated, so that the running condition of the auxiliary inverter when different loads are simultaneously or independently powered can be conveniently found.
As the utility model discloses technical scheme's further improvement again, fault indicator includes that load makes fault indicator, assists contrary fault indicator and the quick-witted fault indicator that charges, load makes fault indicator, assists contrary fault indicator and the quick-witted fault indicator that charges respectively with test sampling circuit links to each other for show the fault conditions of the load switch-on of supplementary dc-to-ac converter, the fault conditions of supplementary dc-to-ac converter and the fault conditions of the quick-witted that charges of supplementary dc-to-ac converter respectively.
The beneficial effect of adopting above-mentioned technical scheme is: the fault indicator lamp is arranged, so that whether the load, the operation, the charger and the like of the auxiliary inverter work normally can be judged quickly and visually through the fault indicator lamp on the tool. If the work is normal, the following maintenance is carried out; if the fault occurs, the functional modules of the load, the power supply and the charger are further detected to find out the determined fault point. Through the hierarchical screening detection, the detection efficiency is obviously improved.
As the utility model discloses technical scheme's further improvement still includes the control unit, the control unit includes control circuit, control button and status indicator lamp, the control circuit passes through the test interface links to each other with supplementary dc-to-ac converter, control button and status indicator lamp respectively with control circuit communication connection.
The beneficial effect of adopting above-mentioned technical scheme is: through the cooperation of the control button state indicator lamp and the control circuit in the control unit, testers can observe the test state in real time conveniently, and manually adjust the control variable according to the actual condition, so that the working states of the auxiliary inverter under different variable conditions can be tested.
As a further improvement of the technical solution of the present invention, the control button comprises an auxiliary reverse power start/stop button, an auxiliary reverse power start/stop button and a power start/stop button, wherein the auxiliary reverse power start/stop button is used for manually operating the start and stop of the power supply unit of the auxiliary inverter; the auxiliary reverse start-stop button is used for manually operating the start and stop of the auxiliary inverter; the power supply start-stop button is used for starting and stopping a power supply of the manual operation test tool.
The beneficial effect of adopting above-mentioned technical scheme is: the auxiliary reverse power supply start-stop button, the auxiliary reverse start-stop button and the power supply start-stop button are beneficial to respectively and independently controlling the start and stop of the power supply unit of the auxiliary inverter, the auxiliary inverter and the power supply of the test tool, so that mutual independence among different electrical units is enhanced, and fault sources are convenient to identify.
As a further improvement of the technical solution of the present invention, the status indicator light includes an auxiliary reverse power supply working indicator light, an auxiliary reverse operation indicator light and an auxiliary reverse start signal indicator light which are arranged outside the box body, and the auxiliary reverse power supply working indicator light is used for indicating the working status of the power supply of the auxiliary inverter; the auxiliary reverse operation indicating lamp is used for indicating the operation state of the auxiliary inverter; the auxiliary reverse starting signal indicator lamp is used for indicating the starting state of the auxiliary inverter.
The beneficial effect of adopting above-mentioned technical scheme is: the state indicator lamp respectively carries out visual state indication on the power supply working state, the running state and the starting state of the auxiliary inverter by introducing the auxiliary reverse power supply working indicator lamp, the auxiliary reverse running indicator lamp and the auxiliary reverse starting signal indicator lamp, so that a tester can conveniently and quickly identify the integral working state of the auxiliary inverter in a simulation environment through the signal indicator lamp.
As a further improvement of the technical solution of the present invention, the test interface has a plurality of, a plurality of the test interface is used for externally connecting the auxiliary inverter of different models.
The beneficial effect of adopting above-mentioned technical scheme is: the test tool is provided with different test interfaces, so that the test requirements of auxiliary inverters of different models can be met, the application range of the test tool is further expanded, the required number of the test tool is reduced, and the cost of test equipment is effectively reduced.
As the utility model discloses technical scheme's further improvement again, still include the scram switch, the scram switch sets up the top of box.
The beneficial effect of adopting above-mentioned technical scheme is: the top of the box body is provided with the emergency stop switch, so that on one hand, emergency or misoperation occurs, all tests can be cut off by one key, and larger loss is prevented in time; on the other hand, the emergency stop switch is arranged at the top of the box body, the position is protruded, the searching is convenient, the time for reacting and searching the emergency stop switch is reduced, the key pressing at the fastest speed can be realized, and for the electrical components, the reduction of the reaction time is particularly important for reducing the expansion of accidents.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic view of a test configuration of the test tool of the present invention;
fig. 2 is a schematic view of the internal structure of the box body of the testing tool of the present invention;
fig. 3 is a schematic top view of the box body of the testing tool of the present invention;
fig. 4 is a schematic front view of a box body of the testing tool of the present invention;
the corresponding part names indicated by the numbers in the figures are as follows:
an auxiliary inverter 01; a first auxiliary inverter 01.1; a second auxiliary inverter 01.2; a box body 1; a PCB board 11; a test interface 12; a first test interface 12.1; a second test interface 12.2; a power supply interface 13; a power supply unit 2; a programmable controller 21; a load unit 3; a three-phase resistance load 31; a purely resistive load 32; a failure judgment unit 4; a test sampling circuit 41; a malfunction indicator lamp 42; a load enable fault indicator lamp 421; an auxiliary reverse fault indicator light 422; charger fault indicator light 423; a control unit 5; a control circuit 51; a control button 52; an auxiliary reverse power on-off button 521; an auxiliary reverse start-stop button 522; a power on/off button 523; a status indicator lamp 53; an auxiliary reverse power operation indicator light 531; an auxiliary reverse running indicator 532; an auxiliary reverse start signal indicator light 533; and an emergency stop switch 6.
Detailed Description
To facilitate understanding of the present invention, the present invention will be described more fully and specifically with reference to the accompanying drawings and preferred embodiments, but the scope of the present invention is not limited to the specific embodiments described below. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In order to realize the utility model discloses a purpose, the utility model provides a technical scheme does:
a test fixture for an auxiliary inverter, comprising: the device comprises a box body 1, a power supply unit 2, a load unit 3 and a fault judgment unit 4; the PCB board 11 is arranged inside the box body 1, and the test interface 12 and the power interface 13 are arranged outside the box body 1; the PCB 11 is respectively communicated with the test interface 12 and the power interface 13; the test interface 12 is used for connecting the auxiliary inverter 01, and the power interface 13 is used for externally connecting a power supply; the power supply unit 2 is connected with the auxiliary inverter 01 through the test interface 12 and used for providing a set working power supply for the auxiliary inverter 01; the load unit 3 is connected with the output end of the auxiliary inverter 01 and used for simulating the working state of the auxiliary inverter 01; the fault judgment unit 4 comprises a test sampling circuit 41 and a fault indicator lamp 42, wherein the test sampling circuit 41 is arranged on the PCB 11, is connected with the auxiliary inverter 01 through a test interface 12, and is used for acquiring data to be tested of the auxiliary inverter 01; the fault indicator lamp 42 is arranged outside the box body 1 and is in communication connection with the test sampling circuit 41.
The beneficial effect of adopting above-mentioned technical scheme is: the problems of low testing efficiency and poor testing result error of the auxiliary inverter in the prior art are fully considered, and the power supply unit and the load unit are introduced into the testing tool to completely simulate the working environment of input and output of the auxiliary inverter box on a railway vehicle, so that the working state of the auxiliary inverter is tested in a vivid working environment to fully expose fault points of the auxiliary inverter; the test tool is used for applying a starting signal to the auxiliary inverter, the auxiliary inverter is started to operate, the auxiliary inverter can be detected, the operation is convenient, and the detection result is stable and reliable.
As the utility model discloses technical scheme's further improvement, power supply unit 2 includes programmable controller 21, and programmable controller 21 sets up in the inside of box 1 to for supplementary inverter 01 provides two kinds of at least DC voltage.
The beneficial effect of adopting above-mentioned technical scheme is: the power supply unit supplies power to the auxiliary inverter by introducing the programmable controller, fully utilizes the advantages of high reliability, strong anti-interference capability, small size and portability of the programmable controller, and provides various voltages for the auxiliary inverter at one time, thereby constructing a normal power supply environment.
As a further improvement of the technical solution of the present invention, the load unit 3 includes a three-phase resistive load 31 and a pure resistive load 32, the three-phase resistive load 31 is connected to the ac output terminal of the auxiliary inverter 01 for simulating an ac load; the pure resistive load 32 is connected to the dc output of the auxiliary inverter 01 for simulating a dc load.
The beneficial effect of adopting above-mentioned technical scheme is: the three-phase resistance load and the pure resistance load are introduced into the load unit, and the alternating current load and the direct current load are respectively simulated, so that the running condition of the auxiliary inverter when different loads are simultaneously or independently powered can be conveniently found.
As the utility model discloses technical scheme's further improvement again, fault indicator lamp 42 includes that load messenger fault indicator lamp 421, the assistance is contrary fault indicator lamp 422 and fill machine fault indicator lamp 423, and load messenger fault indicator lamp 421, the assistance links to each other with test sampling circuit 41 respectively with the machine fault indicator lamp 423 that fills contrary fault indicator lamp 422 and fill machine fault indicator lamp 423 for show the fault conditions of the load switch-on of supplementary inverter 01 respectively, the fault conditions of the machine that fills of supplementary inverter 01 and the fault conditions of the machine that fills of supplementary inverter 01.
The beneficial effect of adopting above-mentioned technical scheme is: the fault indicator lamp is arranged, so that whether the load, the operation, the charger and the like of the auxiliary inverter work normally can be judged quickly and visually through the fault indicator lamp on the tool. If the work is normal, the following maintenance is carried out; if the fault occurs, the functional modules of the load, the power supply and the charger are further detected to find out the determined fault point. Through the hierarchical screening detection, the detection efficiency is obviously improved.
As the utility model discloses technical scheme's further improvement still includes the control unit 5, and the control unit 5 includes control circuit 51, control button 52 and status indicator lamp 53, and control circuit 51 passes through test interface 12 and links to each other with supplementary inverter 01, and control button 52 and status indicator lamp 53 respectively with control circuit 51 communication connection.
The beneficial effect of adopting above-mentioned technical scheme is: through the cooperation of the control button state indicator lamp and the control circuit in the control unit, testers can observe the test state in real time conveniently, and manually adjust the control variable according to the actual condition, so that the working states of the auxiliary inverter under different variable conditions can be tested.
As a further improvement of the technical solution of the present invention, the control button 52 includes an auxiliary reverse power start-stop button 521, an auxiliary reverse power start-stop button 522 and a power start-stop button 523, and the auxiliary reverse power start-stop button 521 is used for manually operating the start and stop of the auxiliary inverter power supply unit 2; the auxiliary reverse start-stop button 522 is used for manually operating the start and stop of the auxiliary inverter 01; the power start/stop button 523 is used for starting and stopping a power supply of the manual operation test tool.
The beneficial effect of adopting above-mentioned technical scheme is: the auxiliary reverse power supply start-stop button, the auxiliary reverse start-stop button and the power supply start-stop button are beneficial to respectively and independently controlling the start and stop of the power supply unit of the auxiliary inverter, the auxiliary inverter and the power supply of the test tool, so that mutual independence among different electrical units is enhanced, and fault sources are convenient to identify.
As a further improvement of the technical solution of the present invention, the status indicator lamp 53 includes an auxiliary reverse power supply operation indicator lamp 531, an auxiliary reverse operation indicator lamp 532 and an auxiliary reverse start signal indicator lamp 533 which are arranged outside the box body 1, and the auxiliary reverse power supply operation indicator lamp 531 is used for indicating the operating status of the power supply 2 of the auxiliary inverter; the auxiliary reverse operation indicator lamp 532 is used for indicating the operation state of the auxiliary inverter 01; the auxiliary reverse start signal indicator light 533 is used to indicate the start state of the auxiliary inverter 01.
The beneficial effect of adopting above-mentioned technical scheme is: the state indicator lamp respectively carries out visual state indication on the power supply working state, the running state and the starting state of the auxiliary inverter by introducing the auxiliary reverse power supply working indicator lamp, the auxiliary reverse running indicator lamp and the auxiliary reverse starting signal indicator lamp, so that a tester can conveniently and quickly identify the integral working state of the auxiliary inverter in a simulation environment through the signal indicator lamp.
As the utility model discloses technical scheme's further improvement, test interface 12 has a plurality ofly, and a plurality of test interfaces 12 are used for the auxiliary inverter 01 of external different models.
Specifically, the test interface 12 includes a first test interface 12.1 and a second test interface 12.2, which are respectively externally connected to the first auxiliary inverter 01.1 and the second auxiliary inverter 01.2 for testing.
The beneficial effect of adopting above-mentioned technical scheme is: the test tool is provided with different test interfaces, so that the test requirements of auxiliary inverters of different models can be met, the application range of the test tool is further expanded, the required number of the test tool is reduced, and the cost of test equipment is effectively reduced.
As the utility model discloses technical scheme's further improvement again, still include scram switch 6, scram switch 6 sets up the top at box 1.
The beneficial effect of adopting above-mentioned technical scheme is: the top of the box body is provided with the emergency stop switch, so that on one hand, emergency or misoperation occurs, all tests can be cut off by one key, and larger loss is prevented in time; on the other hand, the emergency stop switch is arranged at the top of the box body, the position is protruded, the searching is convenient, the time for reacting and searching the emergency stop switch is reduced, the key pressing at the fastest speed can be realized, and for the electrical components, the reduction of the reaction time is particularly important for reducing the expansion of accidents.
The above embodiments are only for illustrating the technical conception and the features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and the protection scope of the present invention can not be limited thereby, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.
Claims (9)
1. The utility model provides a test fixture for auxiliary inverter which characterized in that includes: the device comprises a box body, a power supply unit, a load unit and a fault judgment unit;
the PCB is arranged inside the box body, and the test interface and the power interface are arranged outside the box body; the PCB is respectively communicated with the test interface and the power interface; the test interface is used for connecting the auxiliary inverter, and the power supply interface is used for externally connecting a power supply;
the power supply unit is connected with the auxiliary inverter through the test interface and used for providing a set working power supply for the auxiliary inverter;
the load unit is connected with the output end of the auxiliary inverter and is used for simulating the working state of the auxiliary inverter;
the fault judgment unit comprises a test sampling circuit and a fault indicator lamp, wherein the test sampling circuit is arranged on the PCB, is connected with the auxiliary inverter through the test interface and is used for acquiring data to be tested of the auxiliary inverter; the fault indicator lamp is arranged outside the box body and is in communication connection with the test sampling circuit.
2. The test tool for the auxiliary inverter according to claim 1, wherein the power supply unit comprises a programmable controller, and the programmable controller is arranged inside the box body and provides at least two direct-current voltages for the auxiliary inverter.
3. The test tool for the auxiliary inverter according to claim 2, wherein the load unit comprises a three-phase resistance load and a pure resistance load, and the three-phase resistance load is connected with an alternating current output end of the auxiliary inverter and used for simulating an alternating current load; and the pure resistance load is connected with the direct current output end of the auxiliary inverter and is used for simulating a direct current load.
4. The test tool for the auxiliary inverter according to claim 3, wherein the fault indicator lamp comprises a load enabling fault indicator lamp, an auxiliary inverse fault indicator lamp and a charger fault indicator lamp, and the load enabling fault indicator lamp, the auxiliary inverse fault indicator lamp and the charger fault indicator lamp are respectively connected with the test sampling circuit and used for respectively displaying a fault condition of load connection of the auxiliary inverter, a fault condition of the auxiliary inverter and a fault condition of the charger of the auxiliary inverter.
5. The test tool for the auxiliary inverter according to claim 1, further comprising a control unit, wherein the control unit comprises a control circuit, a control button and a status indicator light, the control circuit is connected with the auxiliary inverter through the test interface and used for controlling the working state of the auxiliary inverter, and the control button and the status indicator light are in communication connection with the control circuit respectively.
6. The test tool for the auxiliary inverter according to claim 5, wherein the control buttons comprise an auxiliary reverse power supply start-stop button, an auxiliary reverse start-stop button and a power supply start-stop button, and the auxiliary reverse power supply start-stop button is used for manually operating the start and stop of a power supply unit of the auxiliary inverter; the auxiliary reverse start-stop button is used for manually operating the start and stop of the auxiliary inverter; the power supply start-stop button is used for starting and stopping a power supply of the manual operation test tool.
7. The test tool for the auxiliary inverter according to claim 6, wherein the status indicator lamps comprise an auxiliary reverse power supply working indicator lamp, an auxiliary reverse operation indicator lamp and an auxiliary reverse starting signal indicator lamp which are arranged outside the box body, and the auxiliary reverse power supply working indicator lamp is used for indicating the working status of a power supply of the auxiliary inverter; the auxiliary reverse operation indicating lamp is used for indicating the operation state of the auxiliary inverter; the auxiliary reverse starting signal indicator lamp is used for indicating the starting state of the auxiliary inverter.
8. The test tool for the auxiliary inverter according to claim 1, wherein the number of the test interfaces is multiple, and the multiple test interfaces are used for externally connecting auxiliary inverters of different models.
9. The test tool for the auxiliary inverter according to any one of claims 1 to 8, further comprising an emergency stop switch, wherein the emergency stop switch is arranged at the top of the box body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023196745.XU CN215005645U (en) | 2020-12-25 | 2020-12-25 | Test tool for auxiliary inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023196745.XU CN215005645U (en) | 2020-12-25 | 2020-12-25 | Test tool for auxiliary inverter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215005645U true CN215005645U (en) | 2021-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023196745.XU Active CN215005645U (en) | 2020-12-25 | 2020-12-25 | Test tool for auxiliary inverter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215005645U (en) |
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2020
- 2020-12-25 CN CN202023196745.XU patent/CN215005645U/en active Active
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